BD Diesel Exhaust Manifold Set - Ford 2003-2007 6.0L PowerStrokeHeavy walled manifolds for improved durability. Manifolds are coated to resist corrosion and are pre drilled for pyrometer probes. These units replace the old rusted and leaking stock exhaust manifolds that normally require extensive cleaning and machine work to be recovered from warping and distortion. The manifold set comes with both passenger & driver's side units and feed pipe mounting hardware. With the stock manifolds considered a maintenance